/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 22:47:00,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 22:47:00,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 22:47:00,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 22:47:00,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 22:47:00,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 22:47:00,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 22:47:00,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 22:47:00,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 22:47:00,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 22:47:00,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 22:47:00,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 22:47:00,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 22:47:00,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 22:47:00,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 22:47:00,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 22:47:00,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 22:47:00,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 22:47:00,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 22:47:00,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 22:47:00,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 22:47:00,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 22:47:00,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 22:47:00,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 22:47:00,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 22:47:00,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 22:47:00,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 22:47:00,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 22:47:00,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 22:47:00,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 22:47:00,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 22:47:00,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 22:47:00,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 22:47:00,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 22:47:00,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 22:47:00,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 22:47:00,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 22:47:00,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 22:47:00,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 22:47:00,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 22:47:00,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 22:47:00,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-03-25 22:47:00,796 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 22:47:00,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 22:47:00,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 22:47:00,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 22:47:00,800 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 22:47:00,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 22:47:00,800 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 22:47:00,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 22:47:00,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 22:47:00,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 22:47:00,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 22:47:00,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 22:47:00,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 22:47:00,802 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 22:47:00,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 22:47:00,802 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 22:47:00,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 22:47:00,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 22:47:00,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 22:47:00,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 22:47:00,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 22:47:00,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 22:47:00,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 22:47:00,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 22:47:00,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 22:47:00,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 22:47:00,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 22:47:00,804 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-25 22:47:00,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 22:47:00,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 22:47:00,804 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 22:47:01,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 22:47:01,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 22:47:01,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 22:47:01,099 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 22:47:01,100 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 22:47:01,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2021-03-25 22:47:01,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a2714564/756ce64800f24c3186dbed4fc2a26fce/FLAGdc650c84b [2021-03-25 22:47:01,636 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 22:47:01,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2021-03-25 22:47:01,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a2714564/756ce64800f24c3186dbed4fc2a26fce/FLAGdc650c84b [2021-03-25 22:47:01,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a2714564/756ce64800f24c3186dbed4fc2a26fce [2021-03-25 22:47:01,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 22:47:02,001 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 22:47:02,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 22:47:02,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 22:47:02,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 22:47:02,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 10:47:01" (1/1) ... [2021-03-25 22:47:02,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24fce7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:47:02, skipping insertion in model container [2021-03-25 22:47:02,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 10:47:01" (1/1) ... [2021-03-25 22:47:02,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 22:47:02,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 22:47:02,357 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i[30826,30839] [2021-03-25 22:47:02,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 22:47:02,412 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 22:47:02,457 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i[30826,30839] [2021-03-25 22:47:02,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 22:47:02,513 INFO L208 MainTranslator]: Completed translation [2021-03-25 22:47:02,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:47:02 WrapperNode [2021-03-25 22:47:02,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 22:47:02,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 22:47:02,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 22:47:02,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 22:47:02,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:47:02" (1/1) ... [2021-03-25 22:47:02,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:47:02" (1/1) ... [2021-03-25 22:47:02,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 22:47:02,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 22:47:02,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 22:47:02,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 22:47:02,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:47:02" (1/1) ... [2021-03-25 22:47:02,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:47:02" (1/1) ... [2021-03-25 22:47:02,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:47:02" (1/1) ... [2021-03-25 22:47:02,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:47:02" (1/1) ... [2021-03-25 22:47:02,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:47:02" (1/1) ... [2021-03-25 22:47:02,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:47:02" (1/1) ... [2021-03-25 22:47:02,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:47:02" (1/1) ... [2021-03-25 22:47:02,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 22:47:02,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 22:47:02,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 22:47:02,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 22:47:02,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:47:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 22:47:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 22:47:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 22:47:02,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 22:47:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 22:47:02,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 22:47:02,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 22:47:02,613 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-25 22:47:02,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 22:47:02,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 22:47:02,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 22:47:02,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 22:47:02,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 22:47:02,614 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 22:47:02,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 22:47:02,948 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-25 22:47:02,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 10:47:02 BoogieIcfgContainer [2021-03-25 22:47:02,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 22:47:02,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 22:47:02,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 22:47:02,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 22:47:02,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 10:47:01" (1/3) ... [2021-03-25 22:47:02,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce89f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 10:47:02, skipping insertion in model container [2021-03-25 22:47:02,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:47:02" (2/3) ... [2021-03-25 22:47:02,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce89f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 10:47:02, skipping insertion in model container [2021-03-25 22:47:02,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 10:47:02" (3/3) ... [2021-03-25 22:47:02,955 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2021-03-25 22:47:02,959 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 22:47:02,962 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 22:47:02,963 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 22:47:02,983 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,983 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,983 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,983 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,983 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,984 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,984 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,984 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,984 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,984 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,984 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,985 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,985 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,985 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,985 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,985 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,985 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,987 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,987 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,987 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,987 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,987 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,988 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,988 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,988 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,988 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,988 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,988 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,989 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,989 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,989 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,989 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,989 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,989 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,989 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,990 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,990 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,990 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,990 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,991 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,991 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,991 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,991 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,991 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,991 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,992 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,993 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,993 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,993 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,993 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,993 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,993 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,994 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,994 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,997 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,997 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,997 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,997 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,998 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:02,998 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:47:03,002 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-25 22:47:03,017 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 22:47:03,032 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 22:47:03,033 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 22:47:03,033 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 22:47:03,033 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 22:47:03,033 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 22:47:03,033 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 22:47:03,033 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 22:47:03,033 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 22:47:03,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 83 transitions, 188 flow [2021-03-25 22:47:03,074 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-03-25 22:47:03,074 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 22:47:03,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 83 events. 2/83 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 28. Up to 3 conditions per place. [2021-03-25 22:47:03,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 83 transitions, 188 flow [2021-03-25 22:47:03,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 71 transitions, 160 flow [2021-03-25 22:47:03,080 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:47:03,089 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 71 transitions, 160 flow [2021-03-25 22:47:03,092 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 71 transitions, 160 flow [2021-03-25 22:47:03,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 71 transitions, 160 flow [2021-03-25 22:47:03,109 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-03-25 22:47:03,109 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 22:47:03,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 73 events. 1/73 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 19. Up to 3 conditions per place. [2021-03-25 22:47:03,111 INFO L142 LiptonReduction]: Number of co-enabled transitions 680 [2021-03-25 22:47:05,028 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-03-25 22:47:05,272 INFO L154 LiptonReduction]: Checked pairs total: 1636 [2021-03-25 22:47:05,272 INFO L156 LiptonReduction]: Total number of compositions: 42 [2021-03-25 22:47:05,274 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2195 [2021-03-25 22:47:05,285 INFO L129 PetriNetUnfolder]: 1/29 cut-off events. [2021-03-25 22:47:05,285 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 22:47:05,285 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:47:05,285 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:47:05,286 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:47:05,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:47:05,289 INFO L82 PathProgramCache]: Analyzing trace with hash 986718324, now seen corresponding path program 1 times [2021-03-25 22:47:05,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:47:05,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382987454] [2021-03-25 22:47:05,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:47:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:47:05,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:05,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:47:05,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:05,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:47:05,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:05,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 22:47:05,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:05,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 22:47:05,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:05,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:47:05,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:47:05,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382987454] [2021-03-25 22:47:05,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:47:05,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:47:05,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886830180] [2021-03-25 22:47:05,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 22:47:05,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:47:05,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 22:47:05,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 22:47:05,568 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 125 [2021-03-25 22:47:05,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:05,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:47:05,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 125 [2021-03-25 22:47:05,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:47:05,624 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-03-25 22:47:05,624 INFO L130 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2021-03-25 22:47:05,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 29 events. 0/29 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 22:47:05,626 INFO L132 encePairwiseOnDemand]: 120/125 looper letters, 7 selfloop transitions, 4 changer transitions 1/28 dead transitions. [2021-03-25 22:47:05,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 93 flow [2021-03-25 22:47:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:47:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:47:05,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 377 transitions. [2021-03-25 22:47:05,636 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6032 [2021-03-25 22:47:05,637 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 377 transitions. [2021-03-25 22:47:05,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 377 transitions. [2021-03-25 22:47:05,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:47:05,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 377 transitions. [2021-03-25 22:47:05,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:05,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:05,649 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:05,650 INFO L185 Difference]: Start difference. First operand has 34 places, 29 transitions, 76 flow. Second operand 5 states and 377 transitions. [2021-03-25 22:47:05,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 93 flow [2021-03-25 22:47:05,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 83 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 22:47:05,654 INFO L241 Difference]: Finished difference. Result has 34 places, 27 transitions, 66 flow [2021-03-25 22:47:05,655 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2021-03-25 22:47:05,656 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2021-03-25 22:47:05,656 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:47:05,656 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 27 transitions, 66 flow [2021-03-25 22:47:05,657 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 27 transitions, 66 flow [2021-03-25 22:47:05,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 66 flow [2021-03-25 22:47:05,661 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-03-25 22:47:05,661 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:47:05,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 22:47:05,662 INFO L142 LiptonReduction]: Number of co-enabled transitions 180 [2021-03-25 22:47:05,991 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2021-03-25 22:47:06,247 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2021-03-25 22:47:06,477 INFO L154 LiptonReduction]: Checked pairs total: 708 [2021-03-25 22:47:06,478 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 22:47:06,478 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 822 [2021-03-25 22:47:06,479 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 60 flow [2021-03-25 22:47:06,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:06,479 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:47:06,480 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:47:06,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 22:47:06,480 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:47:06,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:47:06,480 INFO L82 PathProgramCache]: Analyzing trace with hash -319631292, now seen corresponding path program 1 times [2021-03-25 22:47:06,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:47:06,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019657992] [2021-03-25 22:47:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:47:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:47:06,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:06,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:47:06,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:06,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:47:06,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:06,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:47:06,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:06,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:47:06,588 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:47:06,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:47:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:47:06,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019657992] [2021-03-25 22:47:06,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:47:06,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:47:06,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523643499] [2021-03-25 22:47:06,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 22:47:06,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:47:06,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 22:47:06,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-25 22:47:06,601 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 128 [2021-03-25 22:47:06,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 60 flow. Second operand has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 6 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:06,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:47:06,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 128 [2021-03-25 22:47:06,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:47:06,647 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-03-25 22:47:06,647 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 22:47:06,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 45 events. 1/45 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 45. Up to 5 conditions per place. [2021-03-25 22:47:06,647 INFO L132 encePairwiseOnDemand]: 123/128 looper letters, 4 selfloop transitions, 4 changer transitions 2/28 dead transitions. [2021-03-25 22:47:06,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 88 flow [2021-03-25 22:47:06,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 22:47:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 22:47:06,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 653 transitions. [2021-03-25 22:47:06,650 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8502604166666666 [2021-03-25 22:47:06,651 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 653 transitions. [2021-03-25 22:47:06,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 653 transitions. [2021-03-25 22:47:06,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:47:06,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 653 transitions. [2021-03-25 22:47:06,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:06,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:06,656 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:06,656 INFO L185 Difference]: Start difference. First operand has 31 places, 24 transitions, 60 flow. Second operand 6 states and 653 transitions. [2021-03-25 22:47:06,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 88 flow [2021-03-25 22:47:06,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 80 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 22:47:06,657 INFO L241 Difference]: Finished difference. Result has 35 places, 26 transitions, 75 flow [2021-03-25 22:47:06,657 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=75, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2021-03-25 22:47:06,658 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2021-03-25 22:47:06,658 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:47:06,658 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 26 transitions, 75 flow [2021-03-25 22:47:06,658 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 26 transitions, 75 flow [2021-03-25 22:47:06,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 26 transitions, 75 flow [2021-03-25 22:47:06,663 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2021-03-25 22:47:06,663 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 22:47:06,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 38 events. 1/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 50. Up to 5 conditions per place. [2021-03-25 22:47:06,663 INFO L142 LiptonReduction]: Number of co-enabled transitions 172 [2021-03-25 22:47:07,092 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2021-03-25 22:47:07,288 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-03-25 22:47:07,707 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2021-03-25 22:47:07,867 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-03-25 22:47:07,874 INFO L154 LiptonReduction]: Checked pairs total: 386 [2021-03-25 22:47:07,874 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 22:47:07,874 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1216 [2021-03-25 22:47:07,875 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 75 flow [2021-03-25 22:47:07,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 6 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:07,876 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:47:07,876 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:47:07,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 22:47:07,876 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:47:07,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:47:07,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1895920030, now seen corresponding path program 1 times [2021-03-25 22:47:07,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:47:07,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348586095] [2021-03-25 22:47:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:47:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:47:07,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:07,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:47:07,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:07,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:47:07,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:07,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:47:07,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:07,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:47:07,955 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:47:07,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:47:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:47:07,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348586095] [2021-03-25 22:47:07,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:47:07,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:47:07,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132208613] [2021-03-25 22:47:07,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 22:47:07,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:47:07,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 22:47:07,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-25 22:47:07,965 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 130 [2021-03-25 22:47:07,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 75 flow. Second operand has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:07,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:47:07,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 130 [2021-03-25 22:47:07,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:47:08,018 INFO L129 PetriNetUnfolder]: 0/42 cut-off events. [2021-03-25 22:47:08,018 INFO L130 PetriNetUnfolder]: For 14/23 co-relation queries the response was YES. [2021-03-25 22:47:08,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 42 events. 0/42 cut-off events. For 14/23 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 4/46 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 22:47:08,019 INFO L132 encePairwiseOnDemand]: 124/130 looper letters, 2 selfloop transitions, 4 changer transitions 3/26 dead transitions. [2021-03-25 22:47:08,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 26 transitions, 99 flow [2021-03-25 22:47:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:47:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:47:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 759 transitions. [2021-03-25 22:47:08,021 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8340659340659341 [2021-03-25 22:47:08,021 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 759 transitions. [2021-03-25 22:47:08,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 759 transitions. [2021-03-25 22:47:08,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:47:08,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 759 transitions. [2021-03-25 22:47:08,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:08,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 130.0) internal successors, (1040), 8 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:08,026 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 130.0) internal successors, (1040), 8 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:08,026 INFO L185 Difference]: Start difference. First operand has 32 places, 25 transitions, 75 flow. Second operand 7 states and 759 transitions. [2021-03-25 22:47:08,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 26 transitions, 99 flow [2021-03-25 22:47:08,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 94 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 22:47:08,027 INFO L241 Difference]: Finished difference. Result has 37 places, 23 transitions, 70 flow [2021-03-25 22:47:08,027 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=70, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2021-03-25 22:47:08,028 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2021-03-25 22:47:08,028 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:47:08,028 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 23 transitions, 70 flow [2021-03-25 22:47:08,029 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 23 transitions, 70 flow [2021-03-25 22:47:08,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 23 transitions, 70 flow [2021-03-25 22:47:08,035 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-03-25 22:47:08,035 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2021-03-25 22:47:08,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 23 events. 0/23 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 22:47:08,035 INFO L142 LiptonReduction]: Number of co-enabled transitions 104 [2021-03-25 22:47:08,132 INFO L154 LiptonReduction]: Checked pairs total: 194 [2021-03-25 22:47:08,132 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 22:47:08,132 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 104 [2021-03-25 22:47:08,133 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 20 transitions, 64 flow [2021-03-25 22:47:08,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:08,133 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:47:08,133 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:47:08,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 22:47:08,134 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:47:08,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:47:08,134 INFO L82 PathProgramCache]: Analyzing trace with hash 94748498, now seen corresponding path program 1 times [2021-03-25 22:47:08,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:47:08,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582831086] [2021-03-25 22:47:08,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:47:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:47:08,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:08,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:47:08,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:08,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:47:08,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:47:08,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:47:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:47:08,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582831086] [2021-03-25 22:47:08,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:47:08,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 22:47:08,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443307742] [2021-03-25 22:47:08,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 22:47:08,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:47:08,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 22:47:08,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 22:47:08,170 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 133 [2021-03-25 22:47:08,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:08,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:47:08,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 133 [2021-03-25 22:47:08,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:47:08,184 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-25 22:47:08,184 INFO L130 PetriNetUnfolder]: For 10/13 co-relation queries the response was YES. [2021-03-25 22:47:08,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 6 events. 0/6 cut-off events. For 10/13 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 2/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 22:47:08,185 INFO L132 encePairwiseOnDemand]: 131/133 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2021-03-25 22:47:08,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 6 transitions, 26 flow [2021-03-25 22:47:08,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 22:47:08,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 22:47:08,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2021-03-25 22:47:08,186 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2021-03-25 22:47:08,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2021-03-25 22:47:08,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2021-03-25 22:47:08,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:47:08,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2021-03-25 22:47:08,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:08,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:08,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:08,188 INFO L185 Difference]: Start difference. First operand has 33 places, 20 transitions, 64 flow. Second operand 3 states and 273 transitions. [2021-03-25 22:47:08,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 6 transitions, 26 flow [2021-03-25 22:47:08,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 6 transitions, 20 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-25 22:47:08,189 INFO L241 Difference]: Finished difference. Result has 14 places, 0 transitions, 0 flow [2021-03-25 22:47:08,189 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=14, PETRI_TRANSITIONS=0} [2021-03-25 22:47:08,189 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, -20 predicate places. [2021-03-25 22:47:08,189 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:47:08,190 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 14 places, 0 transitions, 0 flow [2021-03-25 22:47:08,190 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 14 places, 0 transitions, 0 flow [2021-03-25 22:47:08,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 22:47:08,190 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 22:47:08,190 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:47:08,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 22:47:08,190 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 22:47:08,191 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:47:08,191 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:47:08,191 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 22:47:08,192 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 22:47:08,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:47:08,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 22:47:08,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 10:47:08 BasicIcfg [2021-03-25 22:47:08,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 22:47:08,196 INFO L168 Benchmark]: Toolchain (without parser) took 6195.11 ms. Allocated memory was 255.9 MB in the beginning and 465.6 MB in the end (delta: 209.7 MB). Free memory was 234.2 MB in the beginning and 342.6 MB in the end (delta: -108.5 MB). Peak memory consumption was 102.3 MB. Max. memory is 16.0 GB. [2021-03-25 22:47:08,196 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 22:47:08,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 511.18 ms. Allocated memory was 255.9 MB in the beginning and 388.0 MB in the end (delta: 132.1 MB). Free memory was 233.5 MB in the beginning and 354.1 MB in the end (delta: -120.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-25 22:47:08,197 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.90 ms. Allocated memory is still 388.0 MB. Free memory was 354.0 MB in the beginning and 352.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 22:47:08,198 INFO L168 Benchmark]: Boogie Preprocessor took 17.40 ms. Allocated memory is still 388.0 MB. Free memory was 352.0 MB in the beginning and 350.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 22:47:08,198 INFO L168 Benchmark]: RCFGBuilder took 384.78 ms. Allocated memory is still 388.0 MB. Free memory was 350.9 MB in the beginning and 367.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.0 GB. [2021-03-25 22:47:08,199 INFO L168 Benchmark]: TraceAbstraction took 5244.80 ms. Allocated memory was 388.0 MB in the beginning and 465.6 MB in the end (delta: 77.6 MB). Free memory was 366.6 MB in the beginning and 342.6 MB in the end (delta: 24.0 MB). Peak memory consumption was 101.4 MB. Max. memory is 16.0 GB. [2021-03-25 22:47:08,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 511.18 ms. Allocated memory was 255.9 MB in the beginning and 388.0 MB in the end (delta: 132.1 MB). Free memory was 233.5 MB in the beginning and 354.1 MB in the end (delta: -120.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.90 ms. Allocated memory is still 388.0 MB. Free memory was 354.0 MB in the beginning and 352.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.40 ms. Allocated memory is still 388.0 MB. Free memory was 352.0 MB in the beginning and 350.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 384.78 ms. Allocated memory is still 388.0 MB. Free memory was 350.9 MB in the beginning and 367.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5244.80 ms. Allocated memory was 388.0 MB in the beginning and 465.6 MB in the end (delta: 77.6 MB). Free memory was 366.6 MB in the beginning and 342.6 MB in the end (delta: 24.0 MB). Peak memory consumption was 101.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2180.7ms, 76 PlacesBefore, 34 PlacesAfterwards, 71 TransitionsBefore, 29 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 1636 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 809, positive: 700, positive conditional: 700, positive unconditional: 0, negative: 109, negative conditional: 109, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 442, positive: 411, positive conditional: 0, positive unconditional: 411, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 442, positive: 411, positive conditional: 0, positive unconditional: 411, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 442, positive: 399, positive conditional: 0, positive unconditional: 399, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 160, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 123, negative conditional: 0, negative unconditional: 123, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 809, positive: 289, positive conditional: 289, positive unconditional: 0, negative: 78, negative conditional: 78, negative unconditional: 0, unknown: 442, unknown conditional: 442, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 71, Positive conditional cache size: 71, Positive unconditional cache size: 0, Negative cache size: 15, Negative conditional cache size: 15, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 821.0ms, 34 PlacesBefore, 31 PlacesAfterwards, 27 TransitionsBefore, 24 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 708 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 307, positive: 235, positive conditional: 235, positive unconditional: 0, negative: 72, negative conditional: 72, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 33, positive: 31, positive conditional: 14, positive unconditional: 17, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 33, positive: 31, positive conditional: 14, positive unconditional: 17, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 33, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 17, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 307, positive: 204, positive conditional: 204, positive unconditional: 0, negative: 70, negative conditional: 70, negative unconditional: 0, unknown: 33, unknown conditional: 33, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 119, Positive cache size: 102, Positive conditional cache size: 102, Positive unconditional cache size: 0, Negative cache size: 17, Negative conditional cache size: 17, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1215.6ms, 35 PlacesBefore, 32 PlacesAfterwards, 26 TransitionsBefore, 25 TransitionsAfterwards, 172 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 386 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 186, positive: 146, positive conditional: 146, positive unconditional: 0, negative: 40, negative conditional: 40, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25, positive: 25, positive conditional: 18, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 25, positive: 25, positive conditional: 18, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 25, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 186, positive: 121, positive conditional: 121, positive unconditional: 0, negative: 40, negative conditional: 40, negative unconditional: 0, unknown: 25, unknown conditional: 25, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 132, Positive cache size: 117, Positive conditional cache size: 117, Positive unconditional cache size: 0, Negative cache size: 15, Negative conditional cache size: 15, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 103.2ms, 37 PlacesBefore, 33 PlacesAfterwards, 23 TransitionsBefore, 20 TransitionsAfterwards, 104 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 194 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 112, positive: 84, positive conditional: 84, positive unconditional: 0, negative: 28, negative conditional: 28, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, positive: 17, positive conditional: 11, positive unconditional: 6, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 20, positive: 17, positive conditional: 11, positive unconditional: 6, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 20, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, positive: 4, positive conditional: 2, positive unconditional: 2, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 22, positive: 11, positive conditional: 8, positive unconditional: 3, negative: 11, negative conditional: 9, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 112, positive: 67, positive conditional: 67, positive unconditional: 0, negative: 25, negative conditional: 25, negative unconditional: 0, unknown: 20, unknown conditional: 20, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 87, Positive cache size: 77, Positive conditional cache size: 77, Positive unconditional cache size: 0, Negative cache size: 10, Negative conditional cache size: 10, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 14 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 87, Positive cache size: 77, Positive conditional cache size: 77, Positive unconditional cache size: 0, Negative cache size: 10, Negative conditional cache size: 10, Negative unconditional cache size: 0 - PositiveResult [Line: 727]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 5163.3ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 236.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2245.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 15 SDslu, 15 SDs, 0 SdLazy, 76 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 61.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.3ms SsaConstructionTime, 97.3ms SatisfiabilityAnalysisTime, 303.8ms InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 466 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...